omap: consolidate touch screen initialization among different boards

Add common-board-devices.c that will contain the code for peripheral
devices initializatoin shared between multiple boards.
Start small with touchscreen initialization.

Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Signed-off-by: Tony Lindgren <tony@atomide.com>

1 files changed, 2 insertions, 44 deletions

diff --git a/arch/arm/mach-omap2/board-overo.c b/arch/arm/mach-omap2/board-overo.c
index 165e1faea1b7..4a02f8434f59 100644
--- a/arch/arm/mach-omap2/board-overo.c
+++ b/arch/arm/mach-omap2/board-overo.c
@@ -56,6 +56,7 @@
 #include "mux.h"
 #include "sdram-micron-mt46h32m32lf-6.h"
 #include "hsmmc.h"
+#include "common-board-devices.h"
 
 #define OVERO_GPIO_BT_XGATE     15
 #define OVERO_GPIO_W2W_NRESET   16
@@ -74,30 +75,6 @@
 #if defined(CONFIG_TOUCHSCREEN_ADS7846) || \
         defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
 
-#include <linux/spi/ads7846.h>
-
-static struct omap2_mcspi_device_config ads7846_mcspi_config = {
-        .turbo_mode     = 0,
-        .single_channel = 1,    /* 0: slave, 1: master */
-};
-
-static int ads7846_get_pendown_state(void)
-{
-        return !gpio_get_value(OVERO_GPIO_PENDOWN);
-}
-
-static struct ads7846_platform_data ads7846_config = {
-        .x_max                  = 0x0fff,
-        .y_max                  = 0x0fff,
-        .x_plate_ohms           = 180,
-        .pressure_max           = 255,
-        .debounce_max           = 10,
-        .debounce_tol           = 3,
-        .debounce_rep           = 1,
-        .get_pendown_state      = ads7846_get_pendown_state,
-        .keep_vref_on           = 1,
-};
-
 /* fixed regulator for ads7846 */
 static struct regulator_consumer_supply ads7846_supply =
         REGULATOR_SUPPLY("vcc", "spi1.0");
@@ -128,14 +105,7 @@ static struct platform_device vads7846_device = {
 
 static void __init overo_ads7846_init(void)
 {
-        if ((gpio_request(OVERO_GPIO_PENDOWN, "ADS7846_PENDOWN") == 0) &&
-            (gpio_direction_input(OVERO_GPIO_PENDOWN) == 0)) {
-                gpio_export(OVERO_GPIO_PENDOWN, 0);
-        } else {
-                printk(KERN_ERR "could not obtain gpio for ADS7846_PENDOWN\n");
-                return;
-        }
-
+        omap_ads7846_init(1, OVERO_GPIO_PENDOWN, 0, NULL);
         platform_device_register(&vads7846_device);
 }
 
@@ -589,18 +559,6 @@ static int __init overo_i2c_init(void)
 }
 
 static struct spi_board_info overo_spi_board_info[] __initdata = {
-#if defined(CONFIG_TOUCHSCREEN_ADS7846) || \
-        defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
-        {
-                .modalias               = "ads7846",
-                .bus_num                = 1,
-                .chip_select            = 0,
-                .max_speed_hz           = 1500000,
-                .controller_data        = &ads7846_mcspi_config,
-                .irq                    = OMAP_GPIO_IRQ(OVERO_GPIO_PENDOWN),
-                .platform_data          = &ads7846_config,
-        },
-#endif
 #if defined(CONFIG_PANEL_LGPHILIPS_LB035Q02) || \
         defined(CONFIG_PANEL_LGPHILIPS_LB035Q02_MODULE)
         {